ResultSet problem

[Indranil Guha Roy]

hi guys,
i am new to this forum....i have got some problem with conditional SELECT statement while working with JDBC.Following is my code fragment.

  String query1="SELECT * FROM teacherdata WHERE code=' " + input + " ' ";
System.out.println(query1);
stmt1=con.createStatement();
ResultSet rst1=stmt1.executeQuery(query1);
while(rst1.next())
{
gs1=rst1.getString("code");
gs2=rst1.getString("name");
gs3=rst1.getString("age");
gs4=rst1.getString("sex");
gs5=rst1.getString("padd");
gs6=rst1.getString("tadd");
gs7=rst1.getString("email");
System.out.println(gs8);
gs9=rst1.getString("doj");
gs10=rst1.getString("dob");
}

the loop (while(rst1.next()) is not working that is it is not retriving values form the table "teacherdata" which is pointed by "project".please help

[edited to add code tags to preserve formatting]
[ April 11, 2005: Message edited by: Jeanne Boyarsky ]

[Heath Williams]

Instead of using SELECT *
Specify your columns. Then retrive them our of the result set using the column name.

[Indranil Guha Roy]

thanks for reply...but if u could be more specific about the syntax of SELECT statement (i.e how to use column names to retrive data), it would have been more helpfull.

[Shailesh Chandra]

Indranil,

you should have posted this in JDBC Forum.
any way does the query printed by System.out.println(query1) gives you result.
If yes then make sure you are connected to correct database or check if there is any exception you are ignoring.

Shailesh

[Ilja Preuss]

Indranil accidentally posted this in a new thread:

Originally posted by Indranil Guha Roy:
thanks for reply...but if u could be more specific about the syntax of SELECT statement (i.e how to use column names to retrive data), it would have been more helpfull.

Anyway, moving to JDBC...

[Heath Williams]

Try this:

 
SELECT TEC.CODE FROM  TEACHERDATA TEC WHERE CODE=' " + input + " ' ";
 
...
 gs1=rst1.getString("code");
 

Do it for each column you need.

[Avi Abrami]

Indranil,
If your query is not returning any rows, it means you are supplying a "code" that does not exist in the TEACHERDATA table. (Or have I misunderstood your problem?)

In other words, perhaps the problem is with your SQL (and not with your java).

Good Luck,
Avi.

[Craig Jackson]

I agree:

If your query is not returning any rows, it means you are supplying a "code" that does not exist in the TEACHERDATA table. (Or have I misunderstood your problem?)

In other words, perhaps the problem is with your SQL (and not with your java)

How about removing the space after and before your single qoute from ' input ' field. i.e.

 String query1="SELECT * FROM teacherdata WHERE code='" + input + "'";